24252821domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = numerator of b(n): b(n) = the minimum possible value for a continued fraction whose terms are a permutation of the terms of the simple continued fraction for H(n) = sum{k=1 to n} 1/k, the n-th harmonic number.at n=19A129084Prime numbersat n=1522027